When it comes to takedown notices, a lot of attention is paid to Google. But what about Bing? Last year, copyright holders asked Microsoft's search engine to remove roughly a quarter billion URLs from its index. Among the requesting copyright holders is, interestingly, Microsoft itself.

While search engines are extremely helpful for the average Internet user, copyright holders also see a massive downside.

For years entertainment industry groups have been frustrated by the fact that “infringing sites” show up in search results. In fact, they see engines as a potential breeding ground for new pirates.

With Google the dominant player, a lot of reporting on the topic has focused on the company whose name has become synonymous with search. Rightfully so, perhaps, as the sheer number of takedown requests it receives surpasses that of all competitors. However, Bing is not that far behind.